New Yamaha C-1 "swoosh"

[antares]

It all depends on :

a. the acoustics

b. the number of tri-chords

c. the size of the damper felts (are they inserted rather deep into the
unisons?)

d. the awareness of the owner, because once you become 'aware' you might get
'bothered' and the otherwise harmless and 'normal' sound could become a real
problem. 

e. Yamaha dampers are usual of very good quality, so are Steinway dampers,
so there should not really be a big difference, except that sometimes an
instrument has a different combination of tri-chords/flat dampers. More
tri-chords will make more 'swoosh', that would seem obvious.


friendly greetings
from

Antares,

Amsterdam, Holland

"where music is, no harm can be"

visit my website at :  http://www.concertpianoservice.nl/


> From: "Gary Mc" <gmcc@charter.net>
> Reply-To: pianotech@ptg.org
> Date: Sun, 24 Feb 2002 06:38:57 -0800
> To: <pianotech@ptg.org>
> Subject: New Yamaha C-1 "swoosh"
> 
> I'm aware that Yamaha grands make a soft swoosh sound when using the sustain
> pedal, caused by the trichords brushing the strings as they lift.
> A customer has a new C-1 in a room with wood floors and  high ceiling. In the
> ceiling over the piano, looks like a glass bubble with an art design on it .So
> the acoustics in the room are very poor to begin with...In discussing the
> problem, I stuck my head under the lid,  and while talking it seemed like
> someone turned the reverb knob up a few more knotches.  So I think what she is
> hearing, in addition to the swoosh, is the sound of partials becoming active
> as the trichord brushes the string, because indeed, when you press the pedal,
> there is a series of a tonal scale, not loud, but definately audible.  Any
> suggestions on what to do?
> And I've not studied this, but why does this occur on Yamaha's and not
> Steinway or Baldwin?
> Thanks for any help
> Gary McCormick
> 
>